:root {
    --bg: #0f1115;
    --panel: #141922;
    --accent: #56d364;
    --muted: #9aa4b2;
    --text: #e5e7eb;
    --danger: #ef4444;
    --radius: 14px;
    --shadow: 0 8px 30px rgba(0, 0, 0, .35);
}

.qc-sr {
    position: absolute;
    left: -9999px;
}

.qc-app {
    width: min(1200px, 100%);
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 20px;
    color: var(--text);
}

.qc-card {
    background: linear-gradient(180deg, #171b24, #10141c);
    border: 1px solid #1f2836;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.qc-board-wrap {
    display: grid;
    place-items: center;
    padding: 18px;
}

.qc-side {
    display: grid;
    grid-template-rows: auto 1fr auto;
    padding: 16px;
    gap: 16px;
}

.qc-title {
    font-weight: 900;
    font-size: 22px;
}

.qc-badge {
    color: var(--muted);
    font-size: 12px;
}

.qc-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

chess-board {
    width: min(92vw, 720px);
    max-width: 760px;
    aspect-ratio: 1/1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.qc-clocks {
    display: grid;
    gap: 10px;
}

.qc-clock {
    display: flex;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: 12px;
    background: #0d121a;
    border: 1px solid #1c2432;
    font-weight: 800;
    font-size: 20px;
}

.qc-clock .role {
    color: var(--muted);
    font-weight: 600;
    font-size: 13px;
}

.qc-moves {
    overflow: auto;
    padding: 12px;
    border-radius: 12px;
    background: #0d121a;
    border: 1px solid #1c2432;
    min-height: 140px;
    white-space: pre-wrap;
    line-height: 1.5;
}

.qc-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.qc-btn {
    appearance: none;
    border: 0;
    border-radius: 12px;
    padding: 12px 14px;
    font-weight: 800;
    cursor: pointer;
    background: #19202b;
    color: var(--text);
    border: 1px solid #273142;
}

.qc-btn:hover {
    transform: translateY(-1px);
}

.qc-btn-accent {
    background: #112316;
    border-color: #294d33;
    color: #bcf7c6;
}

.qc-btn-danger {
    background: #2a1313;
    border-color: #512020;
    color: #ffd4d4;
}

.qc-ad {
    background: #0d121a;
    border: 1px solid #1c2432;
    border-radius: 12px;
    padding: 8px;
    display: grid;
    gap: 6px;
}

.qc-ad-label {
    font-size: 11px;
    color: #667084;
    text-transform: uppercase;
    letter-spacing: .12em;
}

.qc-sub {
    color: var(--muted);
    font-size: 12px;
}

.qc-admin {
    position: fixed;
    bottom: 12px;
    left: 12px;
    background: #0d121a;
    border: 1px dashed #314056;
    border-radius: 10px;
    padding: 8px 10px;
    font-size: 12px;
    color: #9fb3c8;
    opacity: .85;
}

.qc-premium-locked {
    opacity: .5;
    filter: grayscale(.3);
    cursor: not-allowed;
}

@media (max-width: 960px) {
    .qc-app {
        grid-template-columns: 1fr;
    }
}